s Up to 80% Efficiency s Inherently Matched LED Current s Adjustable Control of LED Current s Drives Five White LEDs from 2V s Drives Six White LEDs from 2.7V s Drives Eight White LEDs from 3V s Disconnects LEDs In Shutdown s 1.2MHz Fixed Frequency Switching s Uses Tiny Ceramic Capacitors s Uses Tiny 1mm-Tall Inductors s Regulates Current Even When VIN > VOUT s Operates with VIN as Low as 1V s Low Profile (1mm) ThinSOTTM Package
U.
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FEATURES
s Up to 80% Efficiency s Inherently Matched LED Current s Adjustable Control of LED Current s Drives Five White LEDs from 2V s Drives Six White LEDs from 2.7V s Drives Eight White LEDs from 3V s Disconnects LEDs In Shutdown s 1.2MHz Fixed Frequency Switching s Uses Tiny Ceramic Capacitors s Uses Tiny 1mm-Tall Inductors s Regulates Current Even When VIN > VOUT s Operates with VIN as Low as 1V s Low Profile (1mm) ThinSOTTM Package
U APPLICATIO S
s Cellular Telephones s Handheld Computers s Digital Cameras s Portable MP3 Players s Pagers
TYPICAL APPLICATIO
Li-Ion Driver for Four White LEDs
VIN 2.7V TO 4.2V
L1 6.8µH
D1
C1 4.7µF
PWM DIMMING CONTROL
61
VIN SW
LT1932
5 SHDN
3 LED
RSET
GND
4
RSET 1.
LT1932 Datasheet
